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Radio frequency circuit, radio frequency module, and communication device

a radio frequency module and radio frequency technology, applied in the direction of low noise amplifiers, amplifiers with semiconductor devices/discharge tubes, dual/triple band amplifiers, etc., to achieve the effect of reducing the load of power amplifiers

Active Publication Date: 2022-11-08
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a way to reduce the strain on power amplifiers when multiple radio signals are transmitted at the same time. This can be beneficial for communication devices that use this technology. The invention helps to balance the load on the power amplifier, which can improve efficiency and reliability.

Problems solved by technology

In addition, when radio frequency signals are simultaneously amplified, a load on the power amplifier further increases because a difference between a peak power and an average power of the signals to be amplified increases.

Method used

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  • Radio frequency circuit, radio frequency module, and communication device
  • Radio frequency circuit, radio frequency module, and communication device
  • Radio frequency circuit, radio frequency module, and communication device

Examples

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embodiment 1

1.1 Circuit Configurations of Radio Frequency Circuit 1 and Communication Device 5

[0022]The following describes circuit configurations of radio frequency circuit 1 and communication device 5 according to the present embodiment, with reference to FIG. 1. FIG. 1 is a circuit configuration diagram of radio frequency circuit 1 and communication device 5 according to Embodiment 1.

1.1.1 Circuit Configuration of Communication Device 5

[0023]As shown by FIG. 1, communication device 5 according to the present embodiment includes radio frequency circuit 1 (radio frequency module 1M), antenna circuit 2, RF signal processing circuit (RFIC) 3, and baseband signal processing circuit (BBIC) 4.

[0024]Radio frequency circuit 1 is an example of a radio frequency circuit that transfers a radio frequency signal processed by a signal processing circuit. Radio frequency circuit 1 transfers a radio frequency signal between antenna circuit 2 and RFIC 3. Specifically, radio frequency circuit 1 includes a tran...

embodiment 2

[0105]Next, Embodiment 2 will be described. The present embodiment differs from Embodiment 1 mainly in a means of de-actuating power amplifier 12. The following describes the present embodiment with reference to the drawings, mainly focusing on differences from Embodiment 1.

2.1 Circuit Configurations of Radio Frequency Circuit 1A and Communication Device 5A

[0106]The following describes circuit configurations of radio frequency circuit 1A and communication device 5A according to the present embodiment, with reference to FIG. 5. FIG. 5 is a circuit configuration diagram of radio frequency circuit 1A and communication device 5A according to Embodiment 2.

2.1.1 Circuit Configuration of Radio Frequency Circuit 1A

[0107]As shown by FIG. 5, radio frequency circuit 1A includes power amplifiers 11 and 12, low-noise amplifiers 21 and 22, switches 51 and 52, filters 61 and 62, control circuit 71, antenna connection terminals 101 and 102, transmission input terminals 111 and 112, and reception ou...

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Abstract

A radio frequency circuit includes: a first power amplifier capable of amplifying a first radio frequency signal and a second radio frequency signal each having a different frequency; and a second power amplifier capable of amplifying the second radio frequency signal. In a case where the first radio frequency signal and the second radio frequency signal are simultaneously transmitted, (i) under a condition that a sum of a bandwidth of the first radio frequency signal and a bandwidth of the second radio frequency signal is broader than or equal to a predetermined bandwidth, the first radio frequency signal is amplified by the first power amplifier, and the second radio frequency signal is amplified by the second power amplifier, and (ii) under a condition that the sum is narrower than the predetermined bandwidth, the first radio frequency signal and the second radio frequency signal are amplified by the first power amplifier.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]The present application is based on and claims priority of Japanese Patent Application No. 2020-019552 filed on Feb. 7, 2020. The entire disclosure of the above-identified application, including the specification, drawings and claims is incorporated herein by reference in its entirety.TECHNICAL FIELD[0002]The present disclosure relates to radio frequency circuits, radio frequency modules, and communication devices.BACKGROUND[0003]In the Third Generation Partnership Project (3GPP), the standardization of the Fifth Generation New Radio (5G NR) is proceeding, and a channel bandwidth selectable in each communication band is increasing, which makes it possible to select a broader channel bandwidth (see, for example, the specification of U.S. Patent Application Publication No. 2014 / 0111178).BRIEF SUMMARY[0004]However, when a radio frequency signal having a broader channel bandwidth is transmitted, the SN ratio of the radio frequency signal decre...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04B1/04H03F3/189H04B1/00
CPCH04B1/04H03F3/189H04B1/006H03F2200/294H03F2200/451H04B2001/0408H03F3/195H03F3/245H03F3/72H03F2203/7209H03F2200/111H04B1/48
Inventor TANAKA, SATOSHIMORI, HIROTSUGU
Owner MURATA MFG CO LTD